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|markrohr's Main System||
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|Last Update: October 16, 2006 at 10:19:30||IP Address: 220.127.116.11|
|Amplifier:||Adcom GFA-5300, pooged.|
Home-built all-discrete SS headphone amp with overkill power supply.
AMC 3020 integrated for rear channels.
|Preamplifier (or None if Integrated):||Home-built all-discrete SS. Design stolen from a Harman Kardon schematic but implemented with very high quality parts.|
|Speakers:||Home-built medium-size two-way sealed-box speakers, bi-wired. Birch ply cabs, Vifa PL18WO-09-08 6-1/2' paper-cone woofs, Scan-Speak D2905/9500 1' cloth-dome tweets. 1st-order crossover using Hovland MusicCaps and Solen 14g Perfect Lay inductors. Zobel network. Slightly over-damped bass, Q = about .63 |
Sub: Parts Express Dayton 10' Titanic.
Surround speakers: RA Labs Mini-Reference (2-way sealed box, 6-1/2' woofs). Tweeters replaced with 1' Vifa silk-domes, crossovers reworked to suit.
|CD Player/DAC:||Rotel RCD-971, output stage and PS lightly pooged.|
|Turntable/Phono Stage:||AR EB-101 w/stock arm|
Shure V15 Vx MR.
|Other Source(s):||Magnum-Dynalab FT11 with modified PS and output stage. |
Pioneer PDR-609 CD recorder
Pioneer RT-701 R-to-R
Sony ES-series TC-KA1ESA 3-head cassette deck
|Speaker Cables/Interconnects:||Speaker cables: Nordost CinemaFlex in star-quad configuration, two identical bi-wire sets.|
ICs: Jon Risch DIY twisted-pair-with-shield, Harmonic Technology Precision Link, Monster 850i.
|Other (Power Conditioner, Racks etc.):||Home-built music surround box: basically a line-level L-R extractor built with premium parts. Very effective with simply-miked recordings. Rear channels are run at a level that is imperceptible unless switched off.|
APS-8 FM antenna on rotor in attic, RG6-QS downlead.
ACI 65Hz first-order high-pass filters in front of power amp.
Monster HTS-2000 power filter
Jensen Iso-Max isolation transformer between video and audio to resolve ground-loop issue.
Speaker Stands: poured-concrete birdbath columns. Speakers fixed with Blu-Tak ($1.79 variety).
Rack: custom-made of veneered 3/4' birch plywood, heavily braced. Five shelves, each wide enough for two components. Weight: approx. 1 ton.
Grado SR-60 and SR-125 headphones
Four Audio Asylum Yo-Yos, strategically placed. (The blue ones sound better.)
|Tweaks:||DIY isolation via unhappy balls under CDP, TT, and tuner, DIY roller bearings, vibrapods, cones, and other footers sprinkled about freely.|
|Room Comments/Treatments:||Too small and too square.|
|Music Preferences and Comments:|
|Music Used (Genre/Selections):||Classical, Jazz, Blues, Rock, actually darn near anything except rap.|
|System Goals/Comments:||Natural sounding instruments, good bass, detail without etched treble.|
|System Strengths:||Tone: the system gives a plausible version of the sound of instruments. Relatively smooth bass. Non-fatiguing treble, a smidge rolled-off at the top. The Haffler-type surround gives it a spaciousness that is attractive.|
|System Weaknesses:||Both system and room are too small to do justice to a symphony orchestra in full cry. Not the most dynamic system I've ever heard, nor the most holographic.|
Lacks polarity switch; I switch at the speaker terminals using banana plugs.
|Video/HT System: None|
|Other Interests/Hobbies/Occupation:||classical bass trombone player; low-brass teacher; I also write program notes for symphony orchestras and other clients. Photography (black + white infrared landscapes, mostly)--not enough time for printing these days, must find some.|